The stationary phase of the SPME fiber has a key role in determining the efficiency of...

 

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The stationary phase of the SPME fiber has a key role in determining the efficiency of this extraction technique. Figure 2 shows the total peak area of the volatile compositions in honey extracted using different types of fibers which are carbowax- polydimethylsiloxane (CAR/PDMS), polyacrylate (PA), and polydimethylsiloxane (PDMS). 90000 80000 - 70000- 60000 CAR/PDMS 50000- 40000 PA 30000 PDMS 20000 10000 50 100 150 200 250 300 Extraction time (min) Figure 4 Total peak area of volatiles in honey obtained using different SPME fibers i) State the polarity of each fiber used in this study. (3 marks) ii) Based on results in Figure 4, discuss the efficiency of each fiber in extracting the volatiles compounds in honey. (6 marks) Total peak areas (a.u.) The stationary phase of the SPME fiber has a key role in determining the efficiency of this extraction technique. Figure 2 shows the total peak area of the volatile compositions in honey extracted using different types of fibers which are carbowax- polydimethylsiloxane (CAR/PDMS), polyacrylate (PA), and polydimethylsiloxane (PDMS). 90000 80000 - 70000- 60000 CAR/PDMS 50000- 40000 PA 30000 PDMS 20000 10000 50 100 150 200 250 300 Extraction time (min) Figure 4 Total peak area of volatiles in honey obtained using different SPME fibers i) State the polarity of each fiber used in this study. (3 marks) ii) Based on results in Figure 4, discuss the efficiency of each fiber in extracting the volatiles compounds in honey. (6 marks) Total peak areas (a.u.)

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1 PDMS is a non polar compound compound Polyacrylate is polar compound and CabbowaxPDMS is a semi p... View the full answer